https://github.com/tlaplus/tlaplus/blob/03c7bf4f35ccf1217ac2c53e5bf60d1220c8b0d8/tlatools/org.lamport.tlatools/src/tla2sany/StandardModules/FiniteSets.tla#L21-L27
> On Apr 25, 2024, at 4:53 PM, marta zhango <marta...@xxxxxxxxx> wrote:
>
> Have thought something like this too
>
> Cardinality(set) == (+ e \in DOMAIN set: IF set[e] THEN 1 ELSE 0)
>
> On Friday, April 26, 2024 at 9:17:00 AM UTC+12 marta zhango wrote:
> Like this for instance ?
>
> Cardinality (S) = |S| == Count ( e \in S )
>
>
> On Friday, April 26, 2024 at 8:36:13 AM UTC+12 marta zhango wrote:
> How can I define the cardinality of a set as the number of elements in a set S
> using the notation |S| using TLA.